U_CFUNC int32_t U_CALLCONV
ustrcase_internalFold(const UCaseMap *csm,
UChar *dest, int32_t destCapacity,
const UChar *src, int32_t srcLength,
UErrorCode *pErrorCode) {
return ustr_foldCase(csm->csp, dest, destCapacity, src, srcLength, csm->options, pErrorCode);
}
static int32_t
caseMap(const UCaseMap *csm,
UChar *dest, int32_t destCapacity,
const UChar *src, int32_t srcLength,
int32_t toWhichCase,
UErrorCode *pErrorCode) {
UChar buffer[300];
UChar *temp;
int32_t destLength;
/* check argument values */
if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) {
return 0;
}
if( destCapacity<0 ||
(dest==NULL && destCapacity>0) ||
src==NULL ||
srcLength<-1
) {
*pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
return 0;
}
/* get the string length */
if(srcLength==-1) {
srcLength=u_strlen(src);
}
/* check for overlapping source and destination */
if( dest!=NULL &&
((src>=dest && src<(dest+destCapacity)) ||
(dest>=src && dest<(src+srcLength)))
) {
/* overlap: provide a temporary destination buffer and later copy the result */
if(destCapacity<=(sizeof(buffer)/U_SIZEOF_UCHAR)) {
/* the stack buffer is large enough */
temp=buffer;
} else {
/* allocate a buffer */
temp=(UChar *)uprv_malloc(destCapacity*U_SIZEOF_UCHAR);
if(temp==NULL) {
*pErrorCode=U_MEMORY_ALLOCATION_ERROR;
return 0;
}
}
} else {
temp=dest;
}
destLength=0;
if(toWhichCase==FOLD_CASE) {
destLength=ustr_foldCase(csm->csp, temp, destCapacity, src, srcLength,
csm->options, pErrorCode);
} else {
UCaseContext csc={ NULL };
csc.p=(void *)src;
csc.limit=srcLength;
if(toWhichCase==TO_LOWER) {
destLength=_caseMap(csm, ucase_toFullLower,
temp, destCapacity,
src, &csc,
0, srcLength,
pErrorCode);
} else if(toWhichCase==TO_UPPER) {
destLength=_caseMap(csm, ucase_toFullUpper,
temp, destCapacity,
src, &csc,
0, srcLength,
pErrorCode);
} else /* if(toWhichCase==TO_TITLE) */ {
#if UCONFIG_NO_BREAK_ITERATION
*pErrorCode=U_UNSUPPORTED_ERROR;
#else
/* UCaseMap is actually non-const in toTitle() APIs. */
destLength=_toTitle((UCaseMap *)csm, temp, destCapacity,
src, &csc, srcLength,
pErrorCode);
#endif
}
}
if(temp!=dest) {
/* copy the result string to the destination buffer */
if(destLength>0) {
int32_t copyLength= destLength<=destCapacity ? destLength : destCapacity;
if(copyLength>0) {
uprv_memmove(dest, temp, copyLength*U_SIZEOF_UCHAR);
}
}
if(temp!=buffer) {
uprv_free(temp);
}
}
return u_terminateUChars(dest, destCapacity, destLength, pErrorCode);
}
static int32_t
caseMap(UChar *dest, int32_t destCapacity,
const UChar *src, int32_t srcLength,
UBreakIterator *titleIter,
const char *locale,
uint32_t options,
int32_t toWhichCase,
UErrorCode *pErrorCode) {
UChar buffer[300];
UChar *temp;
const UCaseProps *csp;
int32_t destLength;
UBool ownTitleIter;
/* check argument values */
if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) {
return 0;
}
if( destCapacity<0 ||
(dest==NULL && destCapacity>0) ||
src==NULL ||
srcLength<-1
) {
*pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
return 0;
}
csp=ucase_getSingleton(pErrorCode);
if(U_FAILURE(*pErrorCode)) {
return 0;
}
/* get the string length */
if(srcLength==-1) {
srcLength=u_strlen(src);
}
/* check for overlapping source and destination */
if( dest!=NULL &&
((src>=dest && src<(dest+destCapacity)) ||
(dest>=src && dest<(src+srcLength)))
) {
/* overlap: provide a temporary destination buffer and later copy the result */
if(destCapacity<=(sizeof(buffer)/U_SIZEOF_UCHAR)) {
/* the stack buffer is large enough */
temp=buffer;
} else {
/* allocate a buffer */
temp=(UChar *)uprv_malloc(destCapacity*U_SIZEOF_UCHAR);
if(temp==NULL) {
*pErrorCode=U_MEMORY_ALLOCATION_ERROR;
return 0;
}
}
} else {
temp=dest;
}
ownTitleIter=FALSE;
destLength=0;
if(toWhichCase==FOLD_CASE) {
destLength=ustr_foldCase(csp, temp, destCapacity, src, srcLength,
options, pErrorCode);
} else {
UCaseContext csc={ NULL };
int32_t locCache;
csc.p=(void *)src;
csc.limit=srcLength;
locCache=0;
/* the internal functions require locale!=NULL */
if(locale==NULL) {
locale=uloc_getDefault();
}
if(toWhichCase==TO_LOWER) {
destLength=_caseMap(csp, ucase_toFullLower,
temp, destCapacity,
src, &csc,
0, srcLength,
locale, &locCache, pErrorCode);
} else if(toWhichCase==TO_UPPER) {
destLength=_caseMap(csp, ucase_toFullUpper,
temp, destCapacity,
src, &csc,
0, srcLength,
locale, &locCache, pErrorCode);
} else /* if(toWhichCase==TO_TITLE) */ {
#if UCONFIG_NO_BREAK_ITERATION
*pErrorCode=U_UNSUPPORTED_ERROR;
#else
if(titleIter==NULL) {
titleIter=ubrk_open(UBRK_WORD, locale,
src, srcLength,
pErrorCode);
ownTitleIter=(UBool)U_SUCCESS(*pErrorCode);
}
if(U_SUCCESS(*pErrorCode)) {
destLength=_toTitle(csp, temp, destCapacity,
src, &csc, srcLength,
titleIter, locale, &locCache, pErrorCode);
}
#endif
}
}
if(temp!=dest) {
/* copy the result string to the destination buffer */
if(destLength>0) {
int32_t copyLength= destLength<=destCapacity ? destLength : destCapacity;
if(copyLength>0) {
uprv_memmove(dest, temp, copyLength*U_SIZEOF_UCHAR);
}
}
if(temp!=buffer) {
uprv_free(temp);
}
}
#if !UCONFIG_NO_BREAK_ITERATION
if(ownTitleIter) {
ubrk_close(titleIter);
}
#endif
return u_terminateUChars(dest, destCapacity, destLength, pErrorCode);
}
